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Muscle powerpoint

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Muscle powerpoint

  1. 1. Muscular System
  2. 2. <ul><li>There are about 600 muscles in your body. </li></ul>
  3. 3. Muscle Control <ul><li>Involuntary Muscle: Not under conscious control. </li></ul><ul><li>Heart beat, digestion </li></ul><ul><li>Voluntary Muscle: Under your control. </li></ul><ul><li>Walking, jumping, etc. </li></ul>
  4. 4. 3 Types of Muscle <ul><li>Skeletal </li></ul><ul><li>Smooth </li></ul><ul><li>Cardiac </li></ul>
  5. 5. Skeletal Muscle <ul><li>Attached to bones of the skeleton. </li></ul><ul><li>Voluntary </li></ul><ul><li>Striated(lines) </li></ul>
  6. 6. Smooth Muscle <ul><li>Inside many internal organs </li></ul><ul><li>Involuntary </li></ul><ul><li>Not striated </li></ul>
  7. 7. Cardiac Muscle <ul><li>Heart </li></ul><ul><li>Involuntary </li></ul><ul><li>Striated </li></ul><ul><li>Does not get tired </li></ul>
  8. 8. Muscles at Work <ul><li>Skeletal muscles work in pairs. </li></ul><ul><ul><li>One muscle contracts </li></ul></ul><ul><ul><li>The other lengthens </li></ul></ul>
  9. 9. Muscle Cells
  10. 10. Skin
  11. 11. Functions <ul><li>Regulates body temperature </li></ul><ul><li>Stores water and fat </li></ul><ul><li>The largest organ </li></ul><ul><ul><li>sensory organ </li></ul></ul><ul><ul><li>Prevents water loss Prevents entry of bacteria </li></ul></ul>
  12. 12. Layers of Skin <ul><li>Epidermis – the thin outer layer of skin that sheds </li></ul><ul><li>Dermis – the middle thick layer- contains sweat glands, nerves, and blood vessels </li></ul><ul><li>Subcutaneous – the deepest layer that contains fat and helps protect body from injury and conserve heat </li></ul>
  13. 13. Facts About Skin <ul><li>An adult has more than 20 square feet of skin – about the size of a blanket. </li></ul><ul><li>You shed about 40 pounds in a lifetime. </li></ul><ul><li>Every minutes 30,000 to 40,000 dead skin cells fall from your body. </li></ul>
  14. 14. Facts About Skin <ul><li>In a month time your body has made a new layer of skin </li></ul><ul><li>There are over a million dust mites on your mattress and pillow chomping on dead skin cells that fell off you last night. </li></ul><ul><li>The eyelid has the thinnest skin, the palms and soles are the thickest. </li></ul>
  15. 15. Parts of the Skin
  16. 16. Muscle, Skin, Bone Cells <ul><li>Bone Cell </li></ul><ul><li>Muscle Cell </li></ul><ul><li>Skin Cell </li></ul>

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